CN211086746U - Optical imaging lens - Google Patents

Abstract

The application discloses an optical imaging lens which sequentially comprises a first lens with focal power, a second lens with focal power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with positive focal power and a seventh lens with focal power, wherein the object side surface of the third lens is convex, the image side surface of the fourth lens is convex, the object side surface of the fourth lens is concave, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet f/EPD < 1.7, and the total effective focal length f of the optical imaging lens and the maximum half-field angle Semi-FOV of the optical imaging lens meet 4mm < tan (Semi-FOV) × f < 5 mm.

Description

Optical imaging lens

Technical Field

The present invention relates to an optical imaging lens, and more particularly, to an optical imaging lens including seven lenses.

Background

With the rapid development of electronic products, the imaging lens is more and more widely applied. On the other hand, with the trend of the portable electronic products towards being lighter and thinner, the imaging lens not only needs to have good image quality, but also needs to have light and thin characteristics, so as to effectively reduce the thickness of the portable electronic products. On the other hand, people also put higher and higher demands on the imaging quality of the imaging lens of the portable electronic product. With the popularization of portable electronic products, the application scenarios are becoming more diversified. The requirements of high pixel, high resolution, miniaturization and brightness are also put forward for the imaging lens used in a matched manner.

SUMMERY OF THE UTILITY MODEL

An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having an optical power; a third lens with focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; a fourth lens element having a focal power, wherein the object-side surface of the fourth lens element is convex and the image-side surface of the fourth lens element is concave; a fifth lens having optical power; a sixth lens having positive optical power; and a seventh lens having a refractive power, the object side surface of which is convex.

In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: f/EPD < 2. Alternatively, f/EPD < 1.7.

In one embodiment, the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens may satisfy 4mm < tan (Semi-FOV) × f < 5 mm.

In one embodiment, the object side surface of the first lens may be convex.

In one embodiment, a distance SAG41 on the optical axis from the intersection point of the object-side surface of the fourth lens and the optical axis to the effective radius vertex of the object-side surface of the fourth lens and a distance SAG42 on the optical axis from the intersection point of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens may satisfy: 0.5 < SAG41/SAG42 < 1.

In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the total effective focal length f of the optical imaging lens may satisfy: f123/f is more than 0.6 and less than or equal to 1.18.

In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens may satisfy: f/f6 is more than or equal to 0.52 and less than 1.1.

In one embodiment, the distance T45 between the fourth lens and the fifth lens on the optical axis and the distance T67 between the sixth lens and the seventh lens on the optical axis may satisfy: 0.3 < T67/T45 < 1.

In one embodiment, the central thickness CT3 of the third lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis and the distance TT L from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis can satisfy 0.1 < (CT3+ CT5+ CT6)/TT L < 0.6.

In one embodiment, the distance T12 between the first lens and the second lens on the optical axis, the distance T23 between the second lens and the third lens on the optical axis, the distance T34 between the third lens and the fourth lens on the optical axis, and the central thickness CT3 of the third lens on the optical axis may satisfy: 0 < (T12+ T23+ T34)/CT3 is less than or equal to 0.33.

In one embodiment, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, and the effective focal length f3 of the third lens may satisfy: f3/(R5-R6) is more than 0 and less than or equal to 0.48.

In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: 0 < (R7-R8)/(R7+ R8) < 0.3.

In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT31 of the object-side surface of the third lens may satisfy: DT11/DT31 is less than or equal to 0.96.

In one embodiment, the radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens may satisfy: 0.2 < | R14/R13| < 0.6.

This application has adopted seven lens, through rational distribution each lens focal power, face type, each lens's central thickness and each lens between the epaxial interval etc for above-mentioned optical imaging lens has at least one beneficial effect such as large aperture, miniaturization, high imaging quality.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;

fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;

fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;

fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;

fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 8.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application may include, for example, seven lenses having optical powers, respectively a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged along the optical axis in sequence from the object side to the image side. Any adjacent two lenses of the first lens to the seventh lens may have a spacing distance therebetween.

In an exemplary embodiment, the first lens has an optical power; the second lens has focal power; the third lens has focal power, and the object side surface of the third lens can be a convex surface, and the image side surface of the third lens can be a convex surface; the fourth lens has focal power, and the object side surface of the fourth lens can be a convex surface and the image side surface of the fourth lens can be a concave surface; the fifth lens has focal power; the sixth lens may have a positive optical power; the seventh lens has optical power, and the object side surface of the seventh lens can be a convex surface.

In an exemplary embodiment, the object side surface of the first lens may be convex.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/EPD < 2, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD may further satisfy: f/EPD < 1.7. Alternatively, f/EPD < 1.5. The requirement that f/EPD is less than 2 or the requirement that f/EPD is less than 1.7 is further met, the optical imaging lens has the advantage of a large aperture in the process of increasing the light transmission quantity, so that the imaging effect in a dark environment is enhanced while the aberration of the marginal field of view is reduced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy 4mm < tan (Semi-FOV) × f < 5mm, where f is a total effective focal length of the optical imaging lens and Semi-FOV is a maximum half field angle of the optical imaging lens, more particularly, f and Semi-FOV may further satisfy 4.2mm < tan (Semi-FOV) × f < 4.7mm, satisfy 4mm < tan (Semi-FOV) × f < 5mm, and may effectively control an imaging range of the optical imaging lens on an imaging plane, facilitating both matching of a chip size and reduction of aberrations of a system.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < SAG41/SAG42 < 1, wherein SAG41 is a distance on the optical axis between an intersection point of an object side surface of the fourth lens and the optical axis and an effective radius vertex of the object side surface of the fourth lens, and SAG42 is a distance on the optical axis between an intersection point of an image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens. More specifically, SAG41 and SAG42 further may satisfy: 0.7 < SAG41/SAG42 < 0.9. The requirement that SAG41/SAG42 is more than 0.5 is less than 1 is met, the fourth lens is effectively prevented from being bent too much, the difficulty in forming and processing the lens is reduced, and the optical imaging lens assembly has higher stability.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f123/f is more than 0.6 and less than or equal to 1.18, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f is the total effective focal length of the optical imaging lens. More specifically, f123 and f further satisfy: f123/f is more than 0.8 and less than or equal to 1.18. F123/f is more than 0.6 and less than or equal to 1.18, the focal powers of the first lens, the second lens and the third lens can be reasonably distributed, so that the optical imaging lens is favorable for better balancing aberration and improving the resolving power of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/f6 is more than or equal to 0.52 and less than 1.1, wherein f is the total effective focal length of the optical imaging lens, and f6 is the effective focal length of the sixth lens. More specifically, f and f6 further satisfy: f/f6 is more than or equal to 0.52 and less than 0.90. F/f6 is more than or equal to 0.52 and less than 1.1, the focal power of the sixth lens can be reasonably distributed, and the optical imaging lens is favorable for balancing aberration better and improving the resolution power of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < T67/T45 < 1, wherein T45 is the distance between the fourth lens and the fifth lens on the optical axis, and T67 is the distance between the sixth lens and the seventh lens on the optical axis. More specifically, T45 and T67 may further satisfy: 0.4 < T67/T45 < 0.9. Satisfy 0.3 < T67/T45 < 1, both can rationally distribute optical imaging lens's interval distance, guarantee processing and equipment characteristic, avoid appearing the interval distance undersize and lead to the fact the assembling process to appear the front and back lens to interfere the scheduling problem, can do benefit to again and slow down light deflection, adjust optical imaging lens's field curvature, reduce the sensitivity, and then obtain better imaging quality.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy 0.1 < (CT3+ CT5+ CT6)/TT L < 0.6, wherein CT3 is a central thickness of the third lens on an optical axis, CT5 is a central thickness of the fifth lens on the optical axis, CT6 is a central thickness of the sixth lens on the optical axis, and TT L is a distance from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis. CT3, CT5, CT6, and TT L may further satisfy 0.2 < (CT3+ CT5+ CT6)/TT L < 0.5. satisfy 0.1 < (CT3+ CT5+ CT6)/TT L < 0.6, thicknesses of the second lens, the third lens, and the sixth lens may be reasonably allocated, which is advantageous for obtaining better imaging quality of the imaging lens, and also advantageous for ensuring compact assembly stability of the optical imaging lens and miniaturization of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < (T12+ T23+ T34)/CT3 is less than or equal to 0.33, wherein T12 is the distance between the first lens and the second lens on the optical axis, T23 is the distance between the second lens and the third lens on the optical axis, T34 is the distance between the third lens and the fourth lens on the optical axis, and CT3 is the central thickness of the third lens on the optical axis. More specifically, T12, T23, T34 and CT3 may further satisfy: 0.1 < (T12+ T23+ T34)/CT3 is less than or equal to 0.33. Satisfy 0 < (T12+ T23+ T34)/CT3 ≤ 0.33, can rationally distribute the spacing distance and center thickness between each lens in the optical axis direction, not only is favorable to effectively control aberration, enable the optical imaging lens to obtain better imaging quality, but also is favorable to ensure the stability of optical imaging lens assembly and miniaturization of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f3/(R5-R6) is more than 0 and less than or equal to 0.48, wherein R5 is the curvature radius of the object side surface of the third lens, R6 is the curvature radius of the image side surface of the third lens, and f3 is the effective focal length of the third lens. More specifically, f3, R5, and R6 may further satisfy: f3/(R5-R6) is more than 0.2 and less than or equal to 0.48. The curvature radius range of the third lens can be reasonably configured to satisfy the condition that f3/(R5-R6) is less than or equal to 0.48, so that the incident light is prevented from being bent too much, and the astigmatism of the optical imaging lens is effectively controlled.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < (R7-R8)/(R7+ R8) < 0.3, wherein R7 is a radius of curvature of an object-side surface of the fourth lens, and R8 is a radius of curvature of an image-side surface of the fourth lens. More specifically, R7 and R8 may further satisfy: 0 < (R7-R8)/(R7+ R8) < 0.2. The curvature radius range of the fourth lens can be reasonably configured to satisfy 0 < (R7-R8)/(R7+ R8) < 0.3, so that the incident light is prevented from being excessively bent, the aberration of the optical imaging lens is effectively controlled, and higher resolving power is obtained.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: DT11/DT31 is 0.96 or less, where DT11 is the maximum effective radius of the object-side surface of the first lens and DT31 is the maximum effective radius of the object-side surface of the third lens. More specifically, DT11 and DT31 further satisfy: DT11/DT31 of more than 0.9 and less than or equal to 0.96. The requirements that DT11/DT31 is less than or equal to 0.96 are met, the maximum effective radius of the first lens and the maximum effective radius of the third lens can be reasonably controlled, the overlarge caliber section difference between the lenses can be effectively prevented, and the stability of assembling the optical imaging lens can be ensured.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.2 < | R14/R13| < 0.6, wherein R13 is a radius of curvature of an object-side surface of the seventh lens, and R14 is a radius of curvature of an image-side surface of the seventh lens. The curvature radius range of the seventh lens can be reasonably configured to meet the condition that the absolute value of R14/R13 is less than 0.6, so that the incident light rays are prevented from being bent too much, the aberration of the optical imaging lens can be effectively controlled, and higher resolving power can be obtained.

In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.

The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more beneficial to production and processing. The optical imaging lens configured in the above manner also has features such as a large aperture, a wide angle of view, excellent imaging quality, and the like.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.

However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).

TABLE 1

In the present example, the total effective focal length f of the optical imaging lens is 5.21mm, the total length TT L of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens) is 7.24mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 40.90 °, and the aperture value Fno is 1.43.

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S14 used in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.0926E-02

7.3639E-03

-1.3720E-02

9.7621E-03

-4.1960E-03

1.2474E-03

-2.5836E-04

3.3941E-05

-2.1526E-06

S2

1.9825E-02

-4.2493E-02

5.3226E-02

-6.0097E-02

4.6387E-02

-2.2015E-02

6.2153E-03

-9.6056E-04

6.2466E-05

S3

8.4466E-03

-5.8498E-02

7.4538E-02

-7.4450E-02

5.2572E-02

-2.3787E-02

6.5294E-03

-9.9121E-04

6.3831E-05

S4

-7.3413E-03

-3.7318E-02

4.7052E-02

-4.2753E-02

2.7997E-02

-1.1992E-02

3.1536E-03

-4.6280E-04

2.9077E-05

S5

1.4850E-02

-2.2832E-02

2.1661E-02

-1.6891E-02

9.4447E-03

-3.3546E-03

7.0957E-04

-8.1028E-05

3.7491E-06

S6

2.2281E-02

-1.7852E-02

8.1830E-03

-2.0111E-04

-2.2430E-03

1.4197E-03

-4.2780E-04

6.6323E-05

-4.2840E-06

S7

-4.8194E-02

2.4620E-02

-2.5939E-02

2.0868E-02

-1.0761E-02

3.5218E-03

-7.0638E-04

7.8735E-05

-3.7141E-06

S8

-7.3373E-02

4.8673E-02

-4.1568E-02

2.7430E-02

-1.2113E-02

3.4425E-03

-5.9420E-04

5.5166E-05

-2.0134E-06

S9

6.2451E-03

-2.0067E-03

1.7358E-03

-3.0278E-03

2.4113E-03

-9.5359E-04

1.9744E-04

-1.8756E-05

5.0100E-07

S10

-1.3810E-01

1.1943E-01

-9.0781E-02

5.5454E-02

-2.4898E-02

7.6784E-03

-1.5163E-03

1.7145E-04

-8.3753E-06

S11

-3.0144E-02

3.0439E-02

-5.1871E-02

3.9505E-02

-1.7936E-02

5.1130E-03

-8.9847E-04

8.8217E-05

-3.6601E-06

S12

1.0364E-01

-1.0746E-01

4.9252E-02

-1.4704E-02

2.9614E-03

-3.9995E-04

3.4704E-05

-1.7388E-06

3.7963E-08

S13

-1.6213E-01

6.9808E-02

-2.6720E-02

7.6058E-03

-1.4017E-03

1.6133E-04

-1.1241E-05

4.3504E-07

-7.2013E-09

S14

-7.2417E-02

2.3587E-02

-6.0441E-03

9.8424E-04

-8.4974E-05

2.5848E-06

1.1935E-07

-1.0645E-08

2.1235E-10

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In this example, the total effective focal length f of the optical imaging lens is 5.34mm, the total length TT L of the optical imaging lens is 7.28mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.34mm, the maximum half field angle Semi-FOV of the optical imaging lens is 38.76 °, and the aperture value Fno is 1.48.

Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 3

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In the present example, the total effective focal length f of the optical imaging lens is 5.29mm, the total length TT L of the optical imaging lens is 7.25mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.73 °, and the aperture value Fno is 1.45.

Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 5

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In the present example, the total effective focal length f of the optical imaging lens is 5.29mm, the total length TT L of the optical imaging lens is 7.20mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.48mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.57 °, and the aperture value Fno is 1.44.

Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

3.9842E-03

2.1668E-02

-2.1948E-0

1.5922E-02

-8.1137E-03

2.7064E-03

-5.6073E-04

6.5156E-05

-3.2340E-06

S2

1.5274E-02

1.9110E-02

-1.9459E-02

1.7006E-02

-1.1029E-02

4.6131E-03

-1.1706E-03

1.5998E-04

-8.5950E-06

S3

3.6990E-02

-1.1518E-01

1.7889E-01

-1.9244E-01

1.4076E-01

-6.8814E-02

2.1433E-02

-3.8287E-03

2.9929E-04

S4

-5.1244E-02

1.2477E-02

1.9295E-02

-6.6400E-02

9.6042E-02

-8.0231E-02

3.9733E-02

-1.0784E-02

1.2416E-03

S5

-1.6603E-02

-4.0201E-03

5.6389E-04

-5.7330E-04

-1.9123E-03

3.0100E-03

-1.9493E-03

6.0621E-04

-7.1351E-05

S6

-1.4153E-02

-1.0278E-02

1.6228E-02

-2.6335E-02

2.6071E-02

-1.6427E-02

6.3711E-03

-1.3890E-03

1.3103E-04

S7

7.9365E-03

-3.0595E-02

1.6860E-02

5.5535E-03

-1.1365E-02

6.7826E-03

-2.0592E-03

3.1962E-04

-1.9842E-05

S8

7.5543E-02

-1.3190E-01

8.5313E-02

-3.4285E-02

9.5397E-03

-1.8549E-03

2.5069E-04

-2.2512E-05

1.0544E-06

S9

9.9108E-02

-1.0219E-01

6.1192E-02

-2.6173E-02

7.9931E-03

-1.6878E-03

2.3146E-04

-1.8412E-05

6.4132E-07

S10

-4.3624E-02

4.5745E-02

-1.9945E-02

3.5880E-03

1.8851E-04

-2.1426E-04

4.1153E-05

-3.5050E-06

1.1494E-07

S11

2.3975E-02

-1.6016E-02

2.7652E-05

2.0030E-03

-7.5763E-04

1.4138E-04

-1.4913E-05

8.4473E-07

-1.9873E-08

S12

5.9828E-02

-5.0112E-02

1.7345E-02

-3.7258E-03

5.2345E-04

-4.8210E-05

2.7991E-06

-9.2536E-08

1.3222E-09

S13

-8.7968E-02

4.0350E-03

1.7379E-03

-3.7674E-04

3.7492E-05

-2.1814E-06

7.6101E-08

-1.4806E-09

1.2388E-11

S14

-1.1574E-01

2.1345E-02

-2.7138E-03

2.3530E-04

-1.3756E-05

5.3192E-07

-1.3055E-08

1.8486E-10

-1.1559E-12

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In this example, the total effective focal length f of the optical imaging lens is 5.25mm, the total length TT L of the optical imaging lens is 7.25mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.47mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.60 °, and the aperture value Fno is 1.44.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 9

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.2796E-02

1.5343E-02

-3.0052E-02

2.8600E-02

-1.7401E-02

6.9350E-03

-1.7256E-03

2.4178E-04

-1.4560E-05

S2

1.5210E-02

-1.3055E-02

-8.3503E-03

1.7137E-02

-1.1988E-02

4.6914E-03

-1.0620E-03

1.2910E-04

-6.5739E-06

S3

3.6060E-03

-4.9931E-02

5.0917E-02

-3.1817E-02

1.4163E-02

-4.6709E-03

1.0854E-03

-1.5480E-04

9.9074E-06

S4

-8.7571E-03

-4.7594E-02

5.7449E-02

-4.0001E-02

1.8999E-02

-6.1789E-03

1.3099E-03

-1.6306E-04

9.0458E-06

S5

1.4308E-02

-2.0776E-02

1.1262E-02

-1.4746E-03

-1.7522E-03

1.3143E-03

-4.3522E-04

7.2954E-05

-5.0241E-06

S6

2.7494E-02

-2.7992E-02

2.1363E-02

-1.2289E-02

5.1382E-03

-1.4800E-03

2.7351E-04

-2.8492E-05

1.2041E-06

S7

-4.9837E-02

2.8911E-02

-3.1703E-02

2.6424E-02

-1.4325E-02

4.9815E-03

-1.0718E-03

1.2963E-04

-6.7316E-06

S8

-8.0205E-02

6.4461E-02

-6.3352E-02

4.7707E-02

-2.4485E-02

8.2773E-03

-1.7559E-03

2.1116E-04

-1.0962E-05

S9

4.8679E-03

2.4573E-03

-6.4947E-03

5.7044E-03

-2.9904E-03

1.0408E-03

-2.3416E-04

3.0782E-05

-1.7760E-06

S10

-1.0312E-01

7.5251E-02

-4.9486E-02

2.7474E-02

-1.1632E-02

3.4506E-03

-6.6112E-04

7.2793E-05

-3.4691E-06

S11

-1.1788E-02

-1.0248E-03

-1.8431E-02

1.6570E-02

-7.5203E-03

2.0418E-03

-3.3689E-04

3.0990E-05

-1.2053E-06

S12

8.2188E-02

-9.1653E-02

4.1317E-02

-1.1883E-02

2.2688E-03

-2.8555E-04

2.2700E-05

-1.0275E-06

2.0052E-08

S13

-1.4523E-01

5.3643E-02

-1.6739E-02

3.8294E-03

-5.5049E-04

4.5261E-05

-1.8182E-06

1.5764E-08

6.6996E-10

S14

-6.7225E-02

2.3795E-02

-6.6383E-03

1.2975E-03

-1.7375E-04

1.5880E-05

-9.5148E-07

3.3375E-08

-5.1237E-10

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In this example, the total effective focal length f of the optical imaging lens is 5.24mm, the total length TT L of the optical imaging lens is 7.25mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.43mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.52 °, and the aperture value Fno is 1.43.

Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 11

TABLE 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In this example, the total effective focal length f of the optical imaging lens is 5.25mm, the total length TT L of the optical imaging lens is 7.20mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.43mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.45 °, and the aperture value Fno is 1.44.

Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 13

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-3.5094E-03

-5.5276E-05

-1.3714E-02

1.6667E-02

-1.2084E-02

5.5439E-03

-1.5367E-03

2.3367E-04

-1.4970E-05

S2

2.6078E-02

-3.0689E-02

2.0129E-02

-9.9587E-03

1.9196E-03

9.6095E-04

-6.6569E-04

1.4866E-04

-1.1904E-05

S3

-9.3309E-03

-2.5844E-02

3.4885E-02

-2.6703E-02

1.2560E-02

-3.5157E-03

5.0967E-04

-2.2849E-05

-1.2725E-06

S4

-2.9773E-02

-9.2164E-03

2.5002E-02

-2.3319E-02

1.3524E-02

-5.1004E-03

1.1896E-03

-1.5450E-04

8.5421E-06

S5

5.5594E-03

-9.3983E-03

7.9452E-03

-4.5025E-03

2.0065E-03

-6.3386E-04

1.2367E-04

-1.2908E-05

5.2809E-07

S6

2.4883E-02

-2.5015E-02

1.8579E-02

-9.8847E-03

3.6547E-03

-8.8055E-04

1.2940E-04

-1.0161E-05

2.8980E-07

S7

-5.0755E-02

2.9508E-02

-2.8485E-02

2.1427E-02

-1.0770E-02

3.5247E-03

-7.2022E-04

8.2996E-05

-4.1026E-06

S8

-7.8458E-02

6.1239E-02

-5.5758E-02

3.9030E-02

-1.8796E-02

6.0122E-03

-1.2137E-03

1.3919E-04

-6.8833E-06

S9

7.5086E-03

-7.3233E-03

7.3985E-03

-5.2343E-03

2.4848E-03

-7.4627E-04

1.3365E-04

-1.2202E-05

3.8256E-07

S10

-1.6889E-01

1.3933E-01

-9.4261E-02

4.9677E-02

-1.9323E-02

5.2607E-03

-9.3758E-04

9.7724E-05

-4.4858E-06

S11

-3.8434E-02

4.0706E-02

-5.2042E-02

3.5018E-02

-1.4508E-02

3.7945E-03

-6.1275E-04

5.5607E-05

-2.1530E-06

S12

7.5411E-02

-8.9254E-02

4.3005E-02

-1.3367E-02

2.7753E-03

-3.8049E-04

3.2872E-05

-1.6104E-06

3.3882E-08

S13

-1.6499E-01

6.3801E-02

-2.1436E-02

5.6631E-03

-1.0022E-03

1.0996E-04

-7.0315E-06

2.3309E-07

-2.9276E-09

S14

-8.2753E-02

3.4393E-02

-1.1115E-02

2.5794E-03

-4.1371E-04

4.4027E-05

-2.9310E-06

1.0969E-07

-1.7540E-09

TABLE 14

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.

Example 8

An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.

As shown in fig. 15, the optical imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

In this example, the total effective focal length f of the optical imaging lens is 5.24mm, the total length TT L of the optical imaging lens is 7.23mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.44mm, the maximum half field angle Semi-FOV of the optical imaging lens is 39.45 °, and the aperture value Fno is 1.43.

Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 15

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.2739E-02

1.7392E-02

-3.4411E-02

3.3756E-02

-2.1128E-02

8.5640E-03

-2.1400E-03

2.9736E-04

-1.7559E-05

S2

5.2580E-03

2.3540E-02

-6.5143E-02

7.0726E-02

-4.5636E-02

1.8669E-02

-4.6914E-03

6.5523E-04

-3.8785E-05

S3

-8.0476E-03

-1.1452E-02

5.6748E-04

7.8481E-03

-7.5270E-03

3.7039E-03

-1.0556E-03

1.6244E-04

-1.0332E-05

S4

-1.4663E-02

-3.5786E-02

5.1567E-02

-4.4272E-02

2.5884E-02

-9.9259E-03

2.3423E-03

-3.0658E-04

1.7021E-05

S5

1.0622E-02

-2.0852E-02

1.7001E-02

-9.7595E-03

4.6637E-03

-1.5670E-03

3.0619E-04

-2.8593E-05

7.4325E-07

S6

2.3474E-02

-2.0521E-02

1.3256E-02

-6.4950E-03

2.3736E-03

-5.9238E-04

8.9990E-05

-6.6747E-06

8.4829E-08

S7

-5.3537E-02

3.8341E-02

-4.0273E-02

3.1115E-02

-1.6075E-02

5.4351E-03

-1.1516E-03

1.3819E-04

-7.1445E-06

S8

-8.1806E-02

6.8242E-02

-6.4179E-02

4.5842E-02

-2.2641E-02

7.4597E-03

-1.5551E-03

1.8457E-04

-9.4591E-06

S9

-1.0478E-02

3.5138E-03

4.4416E-03

-5.8815E-03

3.6341E-03

-1.2950E-03

2.6904E-04

-2.9577E-05

1.2910E-06

S10

-6.2657E-02

6.1616E-04

1.2178E-02

-5.1373E-03

-9.1951E-05

7.8562E-04

-2.8578E-04

4.4834E-05

-2.7052E-06

S11

-1.2581E-02

-2.6425E-02

1.0909E-02

3.3814E-04

-2.7115E-03

1.3761E-03

-3.3884E-04

4.1921E-05

-2.0526E-06

S12

7.0059E-02

-5.5885E-02

2.1224E-02

-5.6813E-03

1.0131E-03

-1.1210E-04

7.2895E-06

-2.5271E-07

3.5438E-09

S13

-1.5387E-01

4.3753E-02

-6.8224E-03

-1.3571E-03

9.6787E-04

-2.0866E-04

2.2397E-05

-1.2129E-06

2.6437E-08

S14

-1.0065E-01

4.2437E-02

-1.3396E-02

2.9329E-03

-4.2111E-04

3.8602E-05

-2.1740E-06

6.8425E-08

-9.1953E-10

TABLE 16

Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.

In summary, examples 1 to 8 each satisfy the relationship shown in table 17.

TABLE 17

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (20)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having an optical power;

a second lens having an optical power;

a third lens with focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;

a fourth lens element having a focal power, wherein the object-side surface of the fourth lens element is convex and the image-side surface of the fourth lens element is concave;

a fifth lens having optical power;

a sixth lens having positive optical power;

a seventh lens having a refractive power, an object side surface of which is convex;

wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than 1.7; and

the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens meet 4mm < tan (Semi-FOV) × f < 5 mm.

2. The optical imaging lens of claim 1, wherein a combined focal length f123 of the first lens, the second lens and the third lens and a total effective focal length f of the optical imaging lens satisfy: f123/f is more than 0.6 and less than or equal to 1.18.

3. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: f/f6 is more than or equal to 0.52 and less than 1.1.

4. The optical imaging lens according to claim 1, wherein a separation distance T45 on the optical axis between the fourth lens and the fifth lens and a separation distance T67 on the optical axis between the sixth lens and the seventh lens satisfy: 0.3 < T67/T45 < 1.

5. The optical imaging lens of claim 1, wherein a center thickness CT3 of the third lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a distance TT L from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis satisfy 0.1 < (CT3+ CT5+ CT6)/TT L < 0.6.

6. The optical imaging lens according to claim 1, wherein a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, a separation distance T34 on the optical axis of the third lens and the fourth lens, and a center thickness CT3 on the optical axis of the third lens satisfy: 0 < (T12+ T23+ T34)/CT3 is less than or equal to 0.33.

7. The optical imaging lens of claim 1, wherein the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, and the effective focal length f3 of the third lens satisfy: f3/(R5-R6) is more than 0 and less than or equal to 0.48.

8. The optical imaging lens of claim 1, wherein the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 0 < (R7-R8)/(R7+ R8) < 0.3.

9. The optical imaging lens of claim 1, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT31 of the object side surface of the third lens satisfy: DT11/DT31 is less than or equal to 0.96.

10. The optical imaging lens of claim 1, wherein the radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: 0.2 < | R14/R13| < 0.6.

11. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a focal power, an object-side surface of which is convex;

a second lens having an optical power;

a third lens with focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;

a fourth lens element having a focal power, wherein the object-side surface of the fourth lens element is convex and the image-side surface of the fourth lens element is concave;

a fifth lens having optical power;

a sixth lens having optical power;

a seventh lens having optical power;

the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 2; and

a distance SAG41 on the optical axis from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens to a distance SAG42 on the optical axis from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens satisfies: 0.5 < SAG41/SAG42 < 1.

12. The optical imaging lens of claim 11, wherein a combined focal length f123 of the first lens, the second lens and the third lens and a total effective focal length f of the optical imaging lens satisfy: f123/f is more than 0.6 and less than or equal to 1.18.

13. The optical imaging lens of claim 11, wherein the total effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens satisfy: f/f6 is more than or equal to 0.52 and less than 1.1.

14. The optical imaging lens of claim 11, wherein a separation distance T45 between the fourth lens and the fifth lens on the optical axis and a separation distance T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.3 < T67/T45 < 1.

15. The optical imaging lens of claim 11, wherein a center thickness CT3 of the third lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a distance TT L from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis satisfy 0.1 < (CT3+ CT5+ CT6)/TT L < 0.6.

16. The optical imaging lens according to claim 11, wherein a separation distance T12 on the optical axis of the first lens and the second lens, a separation distance T23 on the optical axis of the second lens and the third lens, a separation distance T34 on the optical axis of the third lens and the fourth lens, and a center thickness CT3 on the optical axis of the third lens satisfy: 0 < (T12+ T23+ T34)/CT3 is less than or equal to 0.33.

17. The optical imaging lens of claim 11, wherein the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, and the effective focal length f3 of the third lens satisfy: f3/(R5-R6) is more than 0 and less than or equal to 0.48.

18. The optical imaging lens of claim 11, wherein the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 0 < (R7-R8)/(R7+ R8) < 0.3.

19. The optical imaging lens of claim 11, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT31 of the object side surface of the third lens satisfy: DT11/DT31 is less than or equal to 0.96.

20. The optical imaging lens of claim 11, wherein the radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: 0.2 < | R14/R13| < 0.6.

Images